Harmonization of LC-MS/MS Measurements of Plasma Free Normetanephrine, Metanephrine, and 3-Methoxytyramine

In Matrix Derivatization Combined with LC-MS/MS Results in Ultrasensitive Quantification of Plasma Free Metanephrines and Catecholamines

(2020) Martijn van Faassen et al.   ANALYTICAL CHEMISTRY

Plasma metanephrines and prospective prediction of tumor location, size and mutation type in patients with pheochromocytoma and paraganglioma

(2020) Graeme Eisenhofer et al.   CLINICAL CHEMISTRY AND LABORATORY MEDICINE

A high rate of modestly elevated plasma normetanephrine in a population referred for suspected PPGL when measured in a seated position

(2019) Jessica Boyd et al.   EUROPEAN JOURNAL OF ENDOCRINOLOGY

An evaluation of total 25-hydroxyvitamin D assay standardization: Where are we today?

(2019) Lise Nørkjær Bjerg et al.   JOURNAL OF STEROID BIOCHEMISTRY AND MOLECULAR BIOLOGY

Biochemical testing for neuroblastoma using plasma free 3‐O‐methyldopa, 3‐methoxytyramine, and normetanephrine

(2019) Mirko Peitzsch et al.   PEDIATRIC BLOOD & CANCER

The importance of standardisation of measurement and reference intervals for detection of phaeochromocytoma and paraganglioma (PPGL)

(2018) Tomás P. Griffin et al.   IRISH JOURNAL OF MEDICAL SCIENCE

Falsely elevated plasma metanephrine in patients taking midodrine

(2018) Holly Emms et al.   ANNALS OF CLINICAL BIOCHEMISTRY

Biochemical Diagnosis of Chromaffin Cell Tumors in Patients at High and Low Risk of Disease: Plasma versus Urinary Free or DeconjugatedO-Methylated Catecholamine Metabolites

(2018) Graeme Eisenhofer et al.   CLINICAL CHEMISTRY

Reference intervals for LC-MS/MS measurements of plasma free, urinary free and urinary acid-hydrolyzed deconjugated normetanephrine, metanephrine and methoxytyramine

(2018) Graeme Eisenhofer et al.   CLINICA CHIMICA ACTA

Plasma methoxytyramine: clinical utility with metanephrines for diagnosis of pheochromocytoma and paraganglioma

(2017) Dipti Rao et al.   EUROPEAN JOURNAL OF ENDOCRINOLOGY

Harmonization of serum 25-hydroxycalciferol assay results from high-performance liquid chromatography, enzyme immunoassay, radioimmunoassay, and immunochemiluminescence systems: A multicenter study

(2017) Bahareh Nikooyeh et al.   JOURNAL OF CLINICAL LABORATORY ANALYSIS

Various calibration procedures result in optimal standardization of routinely used 25(OH)D ID-LC-MS/MS methods

(2016) Niek F. Dirks et al.   CLINICA CHIMICA ACTA

Interference from 3-O-Methyldopa with Ultra-High Performance LC-MS/MS Measurements of Plasma Metanephrines: Chromatographic Separation Remains Important

(2015) M. Peitzsch et al.   CLINICAL CHEMISTRY

Multiple Reaction Monitoring with Multistage Fragmentation (MRM3) Detection Enhances Selectivity for LC-MS/MS Analysis of Plasma Free Metanephrines

(2015) M. J. Wright et al.   CLINICAL CHEMISTRY

Harmonization protocols for thyroid stimulating hormone (TSH) immunoassays: different approaches based on the consensus mean value

(2015) Aldo Clerico et al.   CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Diagnostic accuracy of plasma free metanephrines in a seated position compared with 24-hour urinary metanephrines in the investigation of pheochromocytoma

(2015) Hye Jeong Kim et al.   ENDOCRINE JOURNAL

Pediatric reference intervals for plasma free and total metanephrines established with a parametric approach: Relevance to the diagnosis of neuroblastoma

(2015) Laura Crosazzo Franscini et al.   PEDIATRIC BLOOD & CANCER

Analytical interference of 4-hydroxy-3-methoxymethamphetamine with the measurement of plasma free normetanephrine by ultra-high pressure liquid chromatography–tandem mass spectrometry

(2014) Marielle Dunand et al.   CLINICAL BIOCHEMISTRY

Pheochromocytoma and Paraganglioma: An Endocrine Society Clinical Practice Guideline

(2014) Jacques W. M. Lenders et al.   JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM

Biochemical diagnosis of phaeochromocytoma using plasma-free normetanephrine, metanephrine and methoxytyramine: importance of supine sampling under fasting conditions

(2013) Roland Därr et al.   CLINICAL ENDOCRINOLOGY

Ionic Cross Talk Can Lead to Overestimation of 3-Methoxytyramine during Quantification of Metanephrines by Mass Spectrometry

(2012) J. M. Twentyman et al.   CLINICAL CHEMISTRY

Standardization of Misleading Immunoassay Based 25-Hydroxyvitamin D Levels with Liquid Chromatography Tandem-Mass Spectrometry in a Large Cohort Study

(2012) Ben Schöttker et al.   PLoS One

Reference intervals for plasma free metanephrines with an age adjustment for normetanephrine for optimized laboratory testing of phaeochromocytoma

(2012) G. Eisenhofer et al.   ANNALS OF CLINICAL BIOCHEMISTRY

Roadmap for Harmonization of Clinical Laboratory Measurement Procedures

(2011) W. Greg Miller et al.   CLINICAL CHEMISTRY

Implementation of standardization in clinical practice: not always an easy task

(2011) Mauro Panteghini   CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Performance of plasma free metanephrines measured by liquid chromatography–tandem mass spectrometry in the diagnosis of pheochromocytoma

(2010) Robert T. Peaston et al.   CLINICA CHIMICA ACTA

Pitfalls Associated with the Use of Liquid Chromatography-Tandem Mass Spectrometry in the Clinical Laboratory

(2010) M. Vogeser et al.   CLINICAL CHEMISTRY

Harmonization of free thyroid hormone tests: a mission impossible?

(2010) Giorgio Iervasi et al.   CLINICAL CHEMISTRY AND LABORATORY MEDICINE

Pilot quality assurance programme for plasma metanephrines

(2010) D. Pillai et al.   ANNALS OF CLINICAL BIOCHEMISTRY